Sink-shaft drill.



PATEN ED DEG. 24, 1907.

J. P. KARNS. SINK SHAFT DRILL.

APPLICATION FILED MAR, 15,1907.

a; o 0 an cm .llpplicatien filed Elie}; United Emilee;

Boulder, an ccu'c levy- 0i @clorcdc, have 13 Venn-2 1; new 5111cSinlcrShelL D ill which iii-c fcllcwhg is c specifics. i011.

This inventicz: releics to (hills and has fer its principal objcctlcprovide drilling device of simple consbxucticii fer sinlaiz'ig verticalelicits and Wells 0i large cf such c0nstruc$;i0n will )ennit cuttingWit-haul, the aid-cl Elle percuss forcing mechanisms univeisellycmp'leyeii drilling or mnneling nmlchincs cl largclivenlion consists inceytziin no construction and 2111's.: incite: fully "es'crihmaccompanying d? c pointed out in the in undersicod the; vane chan Z.proportions, size and. minor structure may he made from the sphit 0sacrificing c113" vents, es cf the invention.

In m e accompanying (l a. ;s is anelevctiori of a shaft sinmng structedin accordance with the .Hc perts being broken. away 1n craler no (mereFly. 12 3"? clearly illustrate the construction.

a partial plan "view of the same.

Similar numerals 01 relerei ployed is 1116143938 ecu-esp, thrclx 'lmutthe Several Wines 0" b e m s.

face with 2; number of drill hits or cutters 11,

these being preferably arranged Sc as to T cover a lei" e gazcpcrtion cfthe lcwcr suri'm-c of the Clllll ea,

projected beyond the ceriphery of the head drill head 10 is {)KUVlt ed0n. its lower A number of fihe drills we i l I l 1 l we T8 P. mums'immcmme Lemma. 1am. hem 2%..ss2csm I ruled. or form ed integml; withthe u I cf {he drill. head are a. number cf SpfiCGtl. spokes or Webs 18which may he formed. integral Willi a shaft 19, the'letter previded withan attaching device,

cuch as an eye 20 for the reception cf an Opel-min cable, chain, 01 likeby which the (ML is raised. while an; Ulli. Secured t0 the exiciisledwebs is an emiuler cas-- in? or i'zang'e :31 \wlzlifll preferablyexicnds 2-; l ctivcm which are mounted iinu rollers 25 for engagementwith i the Yml'iccl walls cf the shaft. he plates 223 are guided byhalts Z6, Sllil belts extending Lhrcwg h suitable openings formed in thecasing illl'il planes, and swrrimniling these holl'i-z me mmpressionsprings J7 that, tend ncmmll w maintain the aniil'riciiou rollers inwntum will: the wall of the shell.

The hill as a whole is made of such. weight mt it is merely necessary toand then lhc same, so thail in falling by gravity cut away the rock orathei- 11m mi, anal 1c latter when inteimingleil with main? may belQHlG?i3 l 'lrcjm the shaft by a pa? 5 =31 ether suitable device.

1 will he mete; aim the casing; cr vertical hinge lrill head is clllai'ge diameter rxiezulmg new" J 0 the wall cif l w shaft, and

that che connecting eye of slmil, 18 is in a mantel play below the @0 3cf such ces- This coner uctien per "hits the convenni-rollccbion of thebarrel of a sand 11;; the (imitation of the drill, so

and wavy material at 01 ed- 1e hot'bcm cf the Well or shaftmay '5 Mlwitncut the necessity cl remcv- 11;; the ezitile drilling mechanism asmust ordinarily be done in sinking. of oil wells and the like.

12 will we chscrved the-i. the drill head is cpeu so that lohe nmterialdisintegrated by the action of ihe (hills will readily pass lnough thedrill head m the interior of the Prayer and we TQV1QChWlth dove tailedby lire mud pipe 0? omer device. This con in EOSli lQD to he removedsuch material may the drills to fall with the bottom through an indescending the shaft, the body of the;

barrel may remain in engagement with the vertical Wall, but its ointedlower end will be within the vertical line of the casing, so that itwill be guided into such casin and all danger of breakage from jammingoetween the shaft and drill Will be avoided. This construction ermitsthe introduction and operation of t e sand pump at any time Without thenecessity of removing or even stopping the 0 eration of the drill.

1. A, percussive drilling mechanism for sinking shafts of largediameter, comprising an 0 en drill head, a flange extending up War fromthe drill head and of less diameter than the latter, said flange forminga casing into which the material disintegrated by the action of thedrills and the water may pass, said flange forming a sand pump uide. 2.A percussive drilling mec anism for sinking shafts of large diameter,comprising a drill carrying head open for the passage of Water and othermaterial, a casing extendin r upward from the drill head and into whichpass, a drill head carrying shaft, and connecting Webs extending fromthe shaft to the casing.

3. A. percussive drilling mechanism for sinking shafts of largediameter, comprising a drilling head open for the passage of Water andother material, an annular flange eitending upward. from the head andforming a casing into Which such material will pass, a shaft carryingthe drill head, Webs connectng the shaft to the casing, and springerases mounted guiding rollers carried by the upper portion of saidflange and arranged to engage with the wall of the shaft being drilled.

4'. in drilling mechanism for sinking shafts of large diameter, an opendrill head having a vertically extended casing open at the top, a shaft,a plurality of ribs extending from the shaft to the. casing, and aseries of spring pressed anti-friction rollers carried by said casingand arranged to engage the Wall of the shaft at a pointabove the drillhead.

5. In percussive drilling mechanism for sinking shaftsof large diameter,a. drill head arran ed to carry a plurality of cutting bits 4 at itslower face, said drill head being open to permit the free passage ofWater and other material, and an upwardly extending 0 en flange carriedby the drill head and of ess iameter than the latter, the flange forminga sand pum guide.

6. In dril ing mechanism for sinking shafts of large diameter, a drillhead open for the passage of water and other material and hav- 111g anupwardly extended flange or casing of lGSS diameter than the drill headand forming a sand pump guide.

In percussive drilling mechanism for sinking shafts of large diameter, adrill head open for the passage of Water and other material and havingan upwardly extended flange or casing forming a sand pump guide theflange being of less diameter than the drill head, and a drill headcarrying shaft, the top of which is in a plane below the top of saidflange or casing.

In testimony that I claim the foregoing as my own, I have hereto aflixcdmy signature in the presence of two Witnesses.

JOHN PRUE KARNS. l/Vitncsses SHIRLEY DAvis, JNo. E. PARKER.

